You may as well charge from the two USB-A ports at one particular end – at a total of 18W, so charging two or 3 (just one wireless, two wired) devices will split that power output. USB ports are generally anywhere from 1Amp approximately two.4Amps — the higher the amps, https://modernsmarthealth.com/product/computers/power-bank/battery-capacity/15001-20000mah/besiter-power-bank-20000-mah-for-xiaomi-mi-2-quick-charge-3-0-powerbank-portable-charger-external-battery-for-iphone-pover-bank/